VIDEO: Rosie O'Donnell - I'm Not Taking Over When Oprah Retires

Rosie O'Donnell said she won't be stepping back into the daytime talk show circuit, in an interview with Good Morning America onTuesday, when asked if she will fill the void when Oprah Winfrey ends her long-running talk show next year.

"First of all, no one can follow Oprah Winfrey and no one should -- she's the best that ever was," O'Donnell, 47, told GMA host George Stephanopoulos. "Just to be on her show the other day was perfect."

O'Donnell currently hosts her own daily radio show, Rosie Radio, on Sirius satellite radio; her top-rated daytime talk show, The Rosie O' Donnell show, ran from 1996 until 2002. 

O'Donnell’s new HBO documentary, A Family Is a Family, airs January 31 at 7 p.m. on HBO.